A total of 63 percent said they do not believe Christie when he says he had no prior knowledge of a move by his administration to close lanes on the George Washington Bridge last year in apparent retribution on a local Democratic mayor who did not endorse his reelection bid.

Another 26 percent said they believe Christie, while 11 percent are not sure. Christie fired a top aide after emails revealed she had a hand in the closings, and has repeatedly denied any knowledge of the actions. The incident has deflated his recent poll numbers as investigations into the incident are ongoing.

When it comes to Clinton, 51 percent do not believe her when she says she never saw requests for more security at a diplomatic compound in Benghazi, Libya, where a terrorist attack killed four Americans, including a U.S. ambassador, in 2012.

Another 41 percent believe her, while 8 percent are not sure.

Republicans have slammed Clinton for the Benghazi deaths. They say repeated requests for additional security were denied, citing State Department cables bearing her signature.

However, Clinton has said millions of cables are addressed to her and the responses bear her signature regardless of who wrote them.

Clinton is seen as favorable by 56 percent of people, while 38 percent have an unfavorable view, according to the poll. Christie has a 32 percent favorable rating, while 38 percent see him as unfavorable.

The poll surveyed 1,001 people on March 7-10 and has a 3.1 percent margin of error.